./sandbox.sh -p 71399 -P 12580
java.lang.NoClassDefFoundError: com/sun/tools/attach/VirtualMachine
at com.alibaba.jvm.sandbox.core.CoreLauncher.attachAgent(CoreLauncher.java:59)
at com.alibaba.jvm.sandbox.core.CoreLauncher.(CoreLauncher.java:20)
at com.alibaba.jvm.sandbox.core.CoreLauncher.main(CoreLauncher.java:43)
Caused by: java.lang.ClassNotFoundException: com.sun.tools.attach.VirtualMachine
at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:359)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
... 3 more
sandbox load jvm failed : com.sun.tools.attach.VirtualMachine
attach JVM 71399 fail.

这种问题如何解决？